JPH02300556A - Submodulation for pulse width modulation solenoid-operated control valve - Google Patents
Submodulation for pulse width modulation solenoid-operated control valveInfo
- Publication number
- JPH02300556A JPH02300556A JP2115033A JP11503390A JPH02300556A JP H02300556 A JPH02300556 A JP H02300556A JP 2115033 A JP2115033 A JP 2115033A JP 11503390 A JP11503390 A JP 11503390A JP H02300556 A JPH02300556 A JP H02300556A
- Authority
- JP
- Japan
- Prior art keywords
- control
- supply voltage
- solenoid
- duty ratio
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims description 19
- 230000007423 decrease Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 16
- 238000010586 diagram Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 230000001419 dependent effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000004044 response Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 241000270666 Testudines Species 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0251—Elements specially adapted for electric control units, e.g. valves for converting electrical signals to fluid signals
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2093—Control of fluid pressure characterised by the use of electric means with combination of electric and non-electric auxiliary power
- G05D16/2097—Control of fluid pressure characterised by the use of electric means with combination of electric and non-electric auxiliary power using pistons within the main valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0251—Elements specially adapted for electric control units, e.g. valves for converting electrical signals to fluid signals
- F16H2061/0255—Solenoid valve using PWM or duty-cycle control
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86574—Supply and exhaust
- Y10T137/86582—Pilot-actuated
- Y10T137/86614—Electric
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Transmission Device (AREA)
- Magnetically Actuated Valves (AREA)
- Control Of Fluid Gearings (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は（電子油圧）ソレノイド作動制御ノ（ルブな有
する車輌システムの制御に関し、特にシステム供給電圧
の変動を補償する制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to the control of vehicle systems having (electro-hydraulic) solenoid actuation controls, and more particularly to control devices for compensating for variations in system supply voltage.
背景
車輌の環境において電子油圧制御バルブによって流体圧
力を繰り返し正確に制御することは困難な制御課題であ
る。特にこの種のバルブの動作ｅ注はシステム供給電圧
にしたがって劇的に変化する。従来このような変動に対
する対策は、供給電圧を独立に調整するかこの種のバル
ブのソレノイドコイルを過電圧から保護するために電流
な制限することでなされてきた。Background Repetitive and accurate control of fluid pressure by electro-hydraulic control valves in a vehicular environment is a difficult control problem. In particular, the operation of this type of valve varies dramatically depending on the system supply voltage. Conventionally, countermeasures against such fluctuations have been made by adjusting the supply voltage independently or by limiting the current in the solenoid coils of such valves to protect them from overvoltages.
発明の概要
本発明による制御装置は請求項１の特徴部に記載の特徴
によって特徴づけられる。SUMMARY OF THE INVENTION The control device according to the invention is characterized by the features set out in the characterizing part of claim 1.
本発明は通常の電圧レギュレーターを用いることなくソ
レノイド作動制御バルブにおける電圧に依存する変動な
実質的になくした制御装置に関する。この種のバルブの
ソレノイドコイルを指示さ動周期をシステム供給電圧の
大きさに従って定められるデユーティ比で副変調する。The present invention relates to a control system that substantially eliminates voltage dependent fluctuations in solenoid actuated control valves without the use of conventional voltage regulators. The commanded operating period of the solenoid coil of this type of valve is sub-modulated with a duty ratio determined according to the magnitude of the system supply voltage.
従ってソレノイドコイルに印加される有効電圧、従って
ソレノイド作動制御バルブの動作特注はシステム供給電
圧の変動に実質上依存しないものとなる。Therefore, the effective voltage applied to the solenoid coil, and therefore the customized operation of the solenoid actuated control valve, is substantially independent of variations in the system supply voltage.
不発明の一実施例において副変調技術は単一のルノイド
ドライバーとバルブを１２ボルト又は２４ボルトの車輌
電気システムとともに使用することができる。さらに本
技術はその他の関連する制御目的たとえばソレノイド制
御バルブの主変調が必要でなくなった場合にソレノイド
における電力消費な節減するのにも利用できる。In one embodiment of the invention, the submodulation technique allows a single lunoid driver and valve to be used with a 12 volt or 24 volt vehicle electrical system. Additionally, the present technique can be used for other related control purposes, such as reducing power consumption in the solenoid when main modulation of the solenoid control valve is no longer required.
実施例
以下図面を参照してこの発明の実施例を説明する。第１
ａ図において参照番号１０は車輌の駆動列を示している
。車輌駆動列１０は（スロットル内燃）−１−ンジン１
２．（流体〕トルクコンバータ１４、＜６速度流体作動
パワー）トランスミッション１６及び差動装置（ＤＧ）
１８’ｌ−含む。エンジン１２はシャ、１２０を介して
トルクコンバータ１４に接続され、トルクコンバータ１
４はシャフト２０’に介してトランスミッション１６に
接続され、トランスミッション１６はシャフト２４を介
して差動装置１８に接続され、差動装置１８はプロップ
シャフト２６と２８を介して一対の駆動輪（図示せず）
に接続される。Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1st
In Figure a, reference numeral 10 indicates the drive train of the vehicle. The vehicle drive train 10 is (throttle internal combustion)-1-engine 1
2. (Fluid) Torque converter 14, <6 speed fluid operated power) Transmission 16 and differential gear (DG)
18'l-contains. The engine 12 is connected to the torque converter 14 via the shaft 120, and the torque converter 1
4 is connected to a transmission 16 via a shaft 20', the transmission 16 is connected to a differential 18 via a shaft 24, and the differential 18 is connected to a pair of drive wheels (not shown) via prop shafts 26 and 28. figure)
connected to.
エンジン１２と車の駆動輪間の速度トルク関係は流体作
動トルクコンバータクラッチＴＯＯと５つの流体作動ト
ランスミヴションクラッチ０１〜０５（これにより制御
チャンバーが規定される）とによって制御される。トル
クコンバータクラッチＴＯＣ，はソレノイド作動制御バ
ルブ６０により選択的に係合してトルクコンバータ１４
のインペラーとタービンを機械的に接続する。クラッチ
’ｒｃｃ、ａ１、Ｃ２、Ｃ３，Ｃ４，Ｃ５は第１ｂ図の
表に従いソレノイド作動制御バルブ３０．３２゜３４．
３６．３８．４０によりそれぞれ選択的に係合され所望
の・トランスミッション速度変換比を達成する。図示の
トランスミッション装置は一つの逆方向速度比率と六つ
の順方向比率を与えるようになっており、その詳細は米
国特訂第４０７０９２７５に記載される。運転者によっ
て操作される加速ペダル４１はエンジンのスロットルを
位置決めしてエンジン出力を制御する。The speed-torque relationship between the engine 12 and the vehicle's drive wheels is controlled by a fluid-operated torque converter clutch TOO and five fluid-operated transmission clutches 01-05 (which define a control chamber). The torque converter clutch TOC is selectively engaged by a solenoid actuated control valve 60 to control the torque converter 14.
mechanically connects the impeller and turbine. Clutches 'rcc, a1, C2, C3, C4, C5 are controlled by solenoid actuated control valves 30.32°34. according to the table in Figure 1b.
36, 38, and 40, respectively, are selectively engaged to achieve the desired transmission speed conversion ratio. The illustrated transmission system is adapted to provide one reverse speed ratio and six forward speed ratios, the details of which are described in US Pat. No. 4,070,9275. An accelerator pedal 41 operated by the driver positions the engine throttle and controls engine output.
ソレノイド作動制御バルブ３０−４０の動作はシステム
パラメータを表わす種々の入力信号に応答してライン４
４−５４を介してコンピュータ制御装置４０により制御
される。これらの入力信号にはライン５６上のエンジン
スロットル位置信号％Ｔ、ライン５８上のエンジン出力
シャフト速度信号Ｎｅ、ライン６０上のトルクコンバー
タ出力シャフト速度信号Ｎｔ、ライン６２上のトランス
ミッション出力シャフト速度信号Ｎｏ、ライン６４上の
システム供給電圧信号Ｖｂ、ライン６６上のトランシミ
ヴション流体温度信号Ｔｓｕｍｐ 及びライン６８上の
オペレータレンジ選択位置信号Ｒｓを含む。システム供
給電圧はバッテリ（蓄電池）７０を含む＠流電圧源によ
り供給され、入力信号はポテンショメータ、サーミスタ
、磁気速度ビッグアップ等の通常の電気変換器から得ら
れる。Operation of the solenoid-operated control valves 30-40 is performed on line 4 in response to various input signals representative of system parameters.
4-54 by computer controller 40. These input signals include engine throttle position signal %T on line 56, engine output shaft speed signal Ne on line 58, torque converter output shaft speed signal Nt on line 60, and transmission output shaft speed signal No on line 62. , a system supply voltage signal Vb on line 64, a transition fluid temperature signal Tsump on line 66, and an operator range selection position signal Rs on line 68. The system supply voltage is provided by a current voltage source including a battery 70, and the input signal is obtained from conventional electrical transducers such as potentiometers, thermistors, magnetic speed big-ups, etc.
コンピュータ制御装置４０の内部は複数の通常のデバイ
スすなわち内部クロツクとメモリーナ有−ｊるマイクロ
コンピュータ−（ＵＣ）、入出力装置（Ｉｌｏ）及びＰ
ＷＭ発生器（ＰＷＭ）とドライバ（ＤＨ）のアレイで構
成される（副変鉤される〕ソレノイド作動制御バルブ６
０〜４０のそれぞれにつき２つのＰＷＭ発生５（ＰＷＭ
）と１つのドライバ（ＤＨ）が割りあ℃られる。ＰＷＭ
出力は各ドライバ（ＤＦｔ）において論理和によって組
み合わされ、その結課の信号により各ソレノイド作動制
御バルブが駆動される。従ってコンピュータ制御装置４
０は制御手階、ドライバ手段及びＰＷＭ手段を実現する
ものである。Inside the computer control unit 40 are a plurality of conventional devices, namely a microcomputer (UC) with an internal clock and memory, an input/output unit (Ilo), and a
Solenoid-operated control valve 6 consisting of an array of WM generator (PWM) and driver (DH) (with sub-variables)
Two PWM occurrences 5 (PWM
) and one driver (DH) are allocated. PWM
The outputs are combined by logical OR in each driver (DFt), and the resulting signal drives each solenoid-operated control valve. Therefore, the computer control device 4
0 implements the control stage, driver means and PWM means.
トランスミッション１６の油圧系統（８０で示す）はサ
ンプ（貯蔵部〕８４から種々の油圧及び電子油圧バルブ
機構な介してクラッチＴＣＣ及びＣ１〜Ｃ５に加圧され
た流体を供給する正変位ポンプ８２を含む。主フィルタ
８６を通った後、ポンプ８２の流体出力は主圧力調整バ
ルブ８８に供給されライン９０．９２及び９４に調整さ
れた流体圧力を形成し、これにより流体圧力源が構成さ
れる。The hydraulic system (designated 80) of the transmission 16 includes a positive displacement pump 82 that provides pressurized fluid from a sump 84 to clutches TCC and C1-C5 through various hydraulic and electrohydraulic valve mechanisms. After passing through main filter 86, the fluid output of pump 82 is supplied to main pressure regulating valve 88 to create a regulated fluid pressure in lines 90, 92 and 94, thereby forming a fluid pressure source.
ライン９０の流体（通常コンバータ供給圧力と呼ばれる
）は、コンバータシェル９９を介してトルクコンバータ
１４に通される。クーラ１００とクーラーフィルタ１０
２を通ったあとコンバータ流体は調整バルブ１０４によ
り低い圧力に調整さし、バルブ１０６で示すようにトラ
ンスミッションのループ系統に送られる。Fluid in line 90 (commonly referred to as converter supply pressure) is passed to torque converter 14 through converter shell 99 . Cooler 100 and cooler filter 10
2, the converter fluid is regulated to a lower pressure by regulating valve 104 and routed to the transmission loop system, as indicated by valve 106.
ライン９２の流体（一般に主圧力又はライン圧力と呼ば
れる）はソレノイド作動制御バルブ６０〜４００Å力と
して供給されるとともに制御圧力調整バルブ９６に供給
される。制御圧力調整バルブ９６はライン９８に若干低
い圧力（制御圧力〕を形成しこの制御圧力が第１Ｃ図に
示すような各ＩＩバルブ６０〜４０のソレノイドに供給
される。Fluid in line 92 (commonly referred to as main pressure or line pressure) is supplied as a solenoid actuated control valve 60-400 Å force and to a control pressure regulating valve 96. Control pressure regulating valve 96 creates a slightly lower pressure (control pressure) in line 98, and this control pressure is supplied to the solenoids of each II valve 60-40 as shown in FIG. 1C.
ライン９４の流体（コンバータクラッチ圧力と呼ばれる
）は、直接ソレノイド作動制御パル１犯によりトルフコ
ンバータクラッテＴＣＣに供給される。さらにこの圧力
は、主圧力調整バルブ８８に供給されコンバータのロッ
クアップモードにおいて低い調整ライン圧力を与える。Fluid in line 94 (referred to as converter clutch pressure) is supplied to the torque converter clutch TCC by a direct solenoid actuated control pulse. Additionally, this pressure is supplied to the main pressure regulator valve 88 to provide a lower regulator line pressure in the converter's lock-up mode.
第１Ｃ図にソレノイド作動制御バルブ３６で例示するよ
うに各ソレノイド作動制御バルブ３０〜４ｏは（圧力平
衡）スプールバルブ１５０とパルス中震ｉ％（ＰＷＭ）
ンレノイドバルプ１５２と’ａ’含み、ライン９８の制
御圧力をスプールバルブ１５０のパイロットチャンバ１
５４に可変に接続する。パイロットチャンバー１５４の
流体圧力はバネ１５６の刀とライン１６２のフィードバ
ック圧力に抗する刀を発生する。これらの力の結果がス
プール１５８の位置を決め従ってライン９２の主圧力と
個々のクラッチＴＣＣ及び０１〜０５間の伝達の度合い
を決める。ＰＷＭソレノイドバルブ１５２が消勢されて
いる時はパイロットチャンバ１５４の流体圧力は完全に
排出されており、バネ１５６によりスプール１５８は上
方に動かさねクラッチ圧力（末排出ボー目６０を介して
排出されている。ＰＷＭンレノイドバルプ１５２が比較
的低いＰＷＭｆニーティ比で駆動されるとスプール１５
８は下方に下がり排出ポート１６０を部分的に遮断し、
ライン９０の主圧力を部分的に受は入れる。ＰＷＭデユ
ーティ比が上昇するにつれスプール１５８は下降を続は
クラッチ圧力が上昇し。As exemplified by solenoid actuated control valve 36 in FIG.
The control pressure in the line 98 is transferred to the pilot chamber 1 of the spool valve 150.
54 variably connected. The fluid pressure in the pilot chamber 154 generates a force that resists the force of the spring 156 and the feedback pressure of the line 162. The result of these forces determines the position of spool 158 and thus the degree of transmission between the main pressure in line 92 and the individual clutches TCC and 01-05. When the PWM solenoid valve 152 is deenergized, the fluid pressure in the pilot chamber 154 is completely exhausted, and the spring 156 prevents the spool 158 from moving upward. When the PWM lensoid valve 152 is driven at a relatively low PWM fneity ratio, the spool 15
8 is lowered to partially block the discharge port 160,
It partially receives the main pressure in line 90. As the PWM duty ratio increases, the spool 158 lowers and the clutch pressure increases.
最終的に排出ボート１６０は完全に遮断されライン９２
σ）主圧力が全て加わる。Eventually, the discharge boat 160 is completely shut off and the line 92
σ) All main pressures are applied.
上述したＰＷＭデユーティ比とクラッチ圧力との関係を
第２図に図示する。グラフＡはグラフＢに示すＰＷＭデ
ユーティ比の上昇に対するクラッチ圧力特注を示したも
のである。グラフ已に示すようにＰＷＭソレノイドバル
ブは変調（バッテリーコシステム供給亀圧ｖｂによって
駆動されクラッチ圧力は主供給圧力ＭＡＩＮを最大値と
して可変である。The relationship between the above-mentioned PWM duty ratio and clutch pressure is illustrated in FIG. Graph A shows custom clutch pressure as shown in graph B as the PWM duty ratio increases. As shown in the graph, the PWM solenoid valve is modulated (driven by the battery cosystem supply turtle pressure vb, and the clutch pressure is variable with the main supply pressure MAIN as the maximum value).
第２図に示す圧力とチューティ比との関係はバッテリー
７０の特定の端子電圧の大きさに対するものである与え
られたＰＷＭデユーティ比に対しバッテリ電圧が高けれ
ばクラッチ圧力は上昇しバッテリー電圧が低ければクラ
ッチ圧力は減少する。The relationship between pressure and Tutee ratio shown in FIG. 2 is for a specific terminal voltage of the battery 70. For a given PWM duty ratio, if the battery voltage is high, the clutch pressure will increase; if the battery voltage is low, the clutch pressure will increase. Clutch pressure decreases.
従って実際にはソレノイド作動側４バルブ３０〜４０の
動作特注は第６図に示すように圧力対デユーティ比の曲
線群によって示される。第６図の各カーブは異なるバッ
テリー電圧ｖ１．ｖ２．ｖ３．ｖ４゜■５に対応してい
る。ここに電圧■１と■５は、それぞれシステム供給電
圧ｖｂの最大と最小な表わしている。この変動はトラン
スミッション１６を１２ボルトあるいは２４ボルトの電
気システムで装置化した場合に特に顕著である。Therefore, in reality, the customized operation of the four solenoid operated valves 30-40 is represented by a group of pressure versus duty ratio curves as shown in FIG. Each curve in FIG. 6 represents a different battery voltage v1. v2. v3. Compatible with v4゜■5. Here, voltages 1 and 5 represent the maximum and minimum system supply voltages vb, respectively. This variation is particularly noticeable when the transmission 16 is implemented with a 12 volt or 24 volt electrical system.
この発明の主目的はシステム供給電圧にかかわらずソレ
ノイド作動制御バルブ３０−４０の圧力対デユーティ比
の特注がほば一定になるようにソレノイド作動制御バル
ブ３０〜４０の駆動を制御することである。上述したよ
うにこり）目的はこの発明に従い第４図のシステム図に
示すようにシステム供給電圧の大きさに従って主変調デ
ユーティ比を副変調することによって達成される。第４
図のブロック１７０で示すように主ＰＷＭ尚波数は比較
的低く（例えば１００Ｈｚ）、そのオン時間／オフ時間
デユーティ比はそれぞれのクラッチに対する圧力コマン
ドの関数として定められる。図示のようにωＣ＃一温度
Ｔ ｓｕｍｐ も７アクターとなり得る。ブロック１７
０に示すように副変調ＰＷＭ周波数は比較的高く（例え
ば２ＫＨ２）、そのオン時間／オフ時間デユーティ比は
、システム供給電圧ｖｂの関数として定められる。この
主変調デユーティ比と副変調デユーティ比はブロック１
７４で示すように論理和操作により組み合わされ、それ
によりシステム供給電圧ｖｂな各ソレノイド作動制御バ
ルブに印加制御するための制御出力信号が形成される。A primary purpose of the present invention is to control the actuation of solenoid actuated control valves 30-40 such that the customization of the pressure to duty ratio of solenoid actuated control valves 30-40 is approximately constant regardless of system supply voltage. As stated above, this object is achieved in accordance with the present invention by sub-modulating the main modulation duty ratio according to the magnitude of the system supply voltage, as shown in the system diagram of FIG. Fourth
As shown in block 170 of the diagram, the main PWM frequency is relatively low (eg, 100 Hz) and its on-time/off-time duty ratio is determined as a function of the pressure command for each clutch. As shown in the figure, ωC#1 temperature T sump can also be 7 actors. Block 17
0, the sub-modulation PWM frequency is relatively high (eg 2KH2) and its on-time/off-time duty ratio is determined as a function of the system supply voltage vb. This main modulation duty ratio and sub modulation duty ratio are block 1
are combined by an OR operation as shown at 74 to form a control output signal for controlling the application of the system supply voltage vb to each solenoid actuated control valve.
第５図に与えられた（バッテリー）システム供給電圧に
対するＰＷＭ駆動例を図示する。グラフＡは所望の圧力
対主デユーティ比のＷｉを示し、グラフＢは個々のソレ
ノイド作動側−御バルブを適正に駆動するために主デユ
ーティ比が副変調される様子な示す。FIG. 5 illustrates an example PWM drive for a given (battery) system supply voltage. Graph A shows the desired pressure vs. main duty ratio Wi, and graph B shows how the main duty ratio is sub-modulated to properly drive the individual solenoid operated side-controlled valves.
副変調により、主デユーティ比の定める有効駆動力が減
少するので所望の圧力対主デユーティ比特注は（バッテ
リー）システム供給電圧の最小値すなわち第６図におけ
る■５の場合の特注にほぼ対応するように選ぶのが好ま
しい。すなわち第４図のブロック１７０に示すようにシ
ステム供給電圧が■５以下の場合には副変調デユーティ
比は１００％であり、システム供給電圧が■５かも上が
るにつれ段階的にデユーティ比は１００％以下に低下す
る。副変調デユーティ比が低いほど各ソレノイド作動制
御バルブの駆動は低下する。結果としてンレノイド駆動
制御バルブはシステム供給電圧にかかわらず常に所望の
圧力対主デユーティ比特注を維持する。（第４図のブロ
ック１７６参照〕。Due to sub-modulation, the effective driving force determined by the main duty ratio is reduced, so the desired pressure-to-main duty ratio customization should almost correspond to the minimum value of the (battery) system supply voltage, that is, the customization in the case of ■5 in Figure 6. It is preferable to choose. That is, as shown in block 170 of FIG. 4, when the system supply voltage is 5 or less, the sub-modulation duty ratio is 100%, and as the system supply voltage increases by 5, the duty ratio gradually decreases to 100% or less. decreases to The lower the sub-modulation duty ratio, the lower the drive of each solenoid-operated control valve. As a result, the lenoid actuated control valve always maintains the desired pressure to main duty ratio regardless of the system supply voltage. (See block 176 in Figure 4).
主デユーティ比情報と同様に副変調デユーティ比情報は
コンピュータ制御装置４２０マイクロコンピユータメモ
リ内に通常のルックアップテーブルの形態で記憶される
。主デユーティ比ルヴクア、ブチ−プルは所望の圧力の
関数としてアドレ・ツシング可能であり副変調デユーテ
ィ比ルックアヴプテーブルはシステム供給電圧■ｂの関
数によりアドレス指定可能である。The secondary modulation duty ratio information, as well as the primary duty ratio information, is stored in the computer controller 420 microcomputer memory in the form of a conventional look-up table. The primary duty ratio lookup table is addressable as a function of the desired pressure and the secondary modulation duty ratio lookup table is addressable as a function of the system supply voltage.
第６図と第７図はこの発明の副変調制御技術な実現する
ために第１ａ図のコンピュータ制御装置４０により実行
されるコンピュータプログラム命令を表わすフローチャ
ートである。第６図は逐次一連の丈ブルーテンを実行す
るメインルーグプログラムを表わし、これらのサブルー
チンの１つが第７図に詳細に示される。6 and 7 are flowcharts representing computer program instructions executed by computer controller 40 of FIG. 1a to implement the submodulation control technique of the present invention. FIG. 6 represents the main routine program which executes a series of sequential routines, one of these subroutines being shown in detail in FIG.
ブロック１８０にて車輌動作の各期間の開始時にコンピ
ュータ制御装置４００種々のタイマ、レジスタ、変数値
を所定の初期値に設定するための一連の命令が実行され
る。続いてブロック１８２かも１９０が順次繰り返し実
行される。ブロック１８２では種々の入力信号の値を読
み、ソレノイド作動制御バルブ３０−４０の制御のため
に所要の制御信号７ＰＷＭ発生器とドライバーに出力す
る。ブロック１８４から１８８において第１ａ図で述べ
た種々のシステム入力信号を分析し１次回のブロック１
８２の実行時にソレノイド町動制御バルブに与えるため
の圧力コマンド信号ＰＯＭＤを生成する。ブロック１９
０（ソレノイド制御）で第４図の制御システム図に示す
ブロック１７０と１７２の制御機能を実行する。これに
ついては第７図に詳細が示される。At block 180, at the beginning of each period of vehicle operation, a series of instructions are executed to set various timer, register, and variable values of computer controller 400 to predetermined initial values. Subsequently, blocks 182 and 190 are repeatedly executed in sequence. Block 182 reads the values of the various input signals and outputs the required control signals 7 to the PWM generator and driver for control of the solenoid actuated control valves 30-40. Blocks 184 to 188 analyze the various system input signals described in FIG.
82 generates a pressure command signal POMD to be applied to the solenoid control valve. Block 19
0 (solenoid control), the control functions of blocks 170 and 172 shown in the control system diagram of FIG. 4 are executed. This is shown in detail in FIG.
第７図のブロック２００に示すソレノイド制御ルーチン
の最初のステップで主ＰＷＭデユーティ比、ＰＤＣＴＣ
；ＣとＰＤＣＩ −ＰＤＧ５ を決定する。In the first step of the solenoid control routine shown in block 200 of FIG.
;C and PDCI-PDG5 are determined.
これらのデユーティ比は第４図で述べたようにそれぞれ
のクラッチ圧力コマンドＰＯＭＤＴＯＯ−ＰＯＭＤＩ〜
Ｐ ＯＭＤ５ とトランスミッション流体温度Ｔ Ｓ
ｕｍｐの関数として定められる。実際には第４図に示す
値はコンピュータｆｆ１ｌｌ ６１４１装置４０のマイ
クロコンビエータ−（ＵＣ）のメモリ内の２次元ルック
アヴグテープル内に記憶される。These duty ratios are determined by each clutch pressure command POMDTOO-POMDI~ as described in Fig. 4.
P OMD5 and transmission fluid temperature T S
It is determined as a function of ump. In fact, the values shown in FIG. 4 are stored in a two-dimensional look-a-v table in the memory of the micro combinator (UC) of the computer ff1ll 6141 device 40.
続いてブロック２０２かも２０８を実行して副変調ＰＷ
Ｍデユーティ比５ｕＢｐｃ、ｒｃｃ及び５ＵＢＤＣ１〜
５ＵＢＤＣ５を決定する。ブロック２０２で示すように
トランスミッションのシフトが進行中の場合はブロック
２０４と２０６を実行してシフティング用のソレノイド
バルブと非シフト動作のソレノイドバルブに対する副変
調デユーティ比を別々に決定する。シフト動作ソレノイ
ド制御バルブすなわちクラッチの大切がなされている流
体圧力な制御するソレノイド作動制御バルブは第４図で
述べた電圧に依存するデユーティ比で副変調される。Next, block 202 or block 208 is executed to obtain the sub-modulation PW.
M duty ratio 5uBpc, rcc and 5UBDC1~
5UBDC5 is determined. If a transmission shift is in progress, as indicated by block 202, blocks 204 and 206 are executed to separately determine submodulation duty ratios for the shifting and non-shifting solenoid valves. The shift operating solenoid control valve, ie, the solenoid operated control valve which controls the fluid pressure of the clutch, is submodulated with a voltage dependent duty ratio as described in FIG.
非シフト動作のソレノイド作動制御バルブすなわち完全
に係合しているか完全に非係合状態にあるクラッチにお
ける流木圧力を制御するソレノイド作動制御バルブは所
望のソレノイド電流レベルに関連して選定した電圧依存
デユーティ比で副変調される。通常開の非シフト動作の
ソレノイド作動制御バルブは電力消俊す節約するために
バルブな開状態〔油圧オン〕に保持する程度の比較的低
い電圧依存デユーティ比で副変調される。通常開の非シ
フト動作σ）ソレノイド作動制御バルブは若干商い電圧
依存デユーティ比であるがシフティングよりは低いデユ
ーティ比すなわちシステム供給電圧の一次的な遮断に対
してソレノイド制御バルブを閉状態（油圧オフ〕に戻す
ことができる程度のデユーティ比で副変調される。A non-shift operated solenoid operated control valve, that is, a solenoid operated control valve that controls driftwood pressure in a fully engaged or fully disengaged clutch, has a voltage dependent duty selected in relation to the desired solenoid current level. It is sub-modulated by the ratio. Normally open, non-shifting, solenoid actuated control valves are sub-modulated with a relatively low voltage dependent duty ratio to maintain the valve open (hydraulic on) to conserve power. Normally open, non-shifting operation σ) Solenoid-operated control valve has a slightly lower voltage-dependent duty ratio, but lower duty ratio than shifting, i.e., the solenoid-operated control valve is in the closed state (hydraulic off) for a temporary interruption of the system supply voltage. ] is sub-modulated with a duty ratio that can be returned to .
シフトが進行中でない場合は全てのソレノイド作動制御
バルブは非シフトのバルブなのでブロック２０８に実行
してブロック２０６とＩｉＪ様Ｋ して副変調デユーテ
ィ比を決定する。If a shift is not in progress, all solenoid-operated control valves are non-shifting valves, so block 208 is executed and block 206 and IiJ-likeK are performed to determine the sub-modulation duty ratio.
このあと第６図のブロック１８２で主デユーティ比と副
デユーティ比をコンピュータ制御装置４２のＰＷＭ発生
器とドライバーに出力する。それぞれの副変調ソレノイ
ド作動制御バルブろ０−４０のために第１のＰＷＭ発生
器は主周波数のＰＷＭ波形を主デユーティ比に従って形
成し、第２のＰＷＭ発生器は副変調周波数のＰＷＭ波形
を副変調デユーティ比に従って形成する。Thereafter, in block 182 of FIG. 6, the main duty ratio and the sub duty ratio are output to the PWM generator and driver of computer controller 42. For each sub-modulation solenoid operated control valve filter 0-40, the first PWM generator forms a PWM waveform of the main frequency according to the main duty ratio, and the second PWM generator forms a PWM waveform of the sub-modulation frequency as a sub-modulation frequency. Formed according to the modulation duty ratio.
第５図のグラフＢに示すように副変調周波数は主変調周
波数よりも高い。この主デユーティ比と副変調デユーテ
ィ比を第４図のブロック１７４に示すように個々のドラ
イバ回路（ＤＨ）において論理和によって組み合せ増幅
し、それによって対応するソレノイド作動制御バルブを
駆動する。As shown in graph B of FIG. 5, the sub-modulation frequency is higher than the main modulation frequency. The main duty ratio and the sub-modulation duty ratio are combined and amplified by logical sum in each driver circuit (DH) as shown in block 174 of FIG. 4, thereby driving the corresponding solenoid actuated control valve.
第１ａ図はこの発明の電圧制御技術を実現するために複
数のソレノイド作動（流体圧・刀）制御バルブとコンピ
ュータ制御装置を含む流体作動車輌トランスミッション
のシステム図。
第１ｂ図は第１ａ図に示すトランスミッシーンの種々の
速度変換比を達成するためのクラッチ係合を示す図。
第１Ｃ図は第１ａ図に示すソレノイド作動制御バルブを
示す図、
第２図は第ｉａ図のソレノイド作動制御バルブの所望の
圧力応答特注な示す図（グラフＡは所望の出力圧力を示
し、グラフＢは対応する電圧パルス幅変調を示す〕・
第６図はこの発明の副変調制御がない場合におけるシス
テム供給電圧の変動に伴う、ソレノイド作動制御バルブ
の動作特性の変動を示す図。
第４図は主パルス幅変調デユーティ比をシステム供給電
圧に従って副変調してシステム供給電圧の変動によらな
いほぼ一定の圧力応答特注を得るこの発明による制御装
置のブロック図。
第５図は、第２図の圧力応答特注をこの発明の副変調技
術により高いシステム供給電圧で達成する様子な示す図
（グラフＡは所望の出力圧力を示し、グラフＢは対応す
る主及び副変調電圧な示す〕。
第６図と第７図はこの発明の副変調電圧制御な達成する
ために第１ａ図のコンピュータ制御装置により実行され
るコンピュータプログラム命令を表すフローチャートで
ある。
ａｔ 、ｃ２．０３．０４ 、Ｃ５・・・クラッチ、
１６・・・トランスミッション、８２．８８・・・流体
圧力源。
３２．３４．３６．３８．４０・・・ソレノイド作動制
御バルブ、 ７０・・・バッテリ。
■ｂ・・・システム供給電圧。
４２・・・コンピュータ制御装置。
（外４名〕
ＦＩＧ、３
ＦＩＧ、５FIG. 1a is a system diagram of a fluid-operated vehicle transmission including a plurality of solenoid-operated (hydraulic) control valves and a computer controller to implement the voltage control technique of the present invention. FIG. 1b illustrates clutch engagement to achieve various speed conversion ratios of the transmission shown in FIG. 1a. Figure 1C is a diagram illustrating the solenoid actuated control valve shown in Figure 1a; Figure 2 is a diagram illustrating the desired pressure response of the solenoid actuated control valve of Figure IA (graph A shows the desired output pressure; B shows the corresponding voltage pulse width modulation]. FIG. 6 is a diagram showing the variation in the operating characteristics of a solenoid-operated control valve with variation in system supply voltage in the absence of the secondary modulation control of the present invention. 5 is a block diagram of a control device according to the present invention in which the main pulse width modulation duty ratio is sub-modulated in accordance with the system supply voltage to obtain a nearly constant pressure response customization independent of fluctuations in the system supply voltage. FIG. 6 illustrates how pressure response customization is achieved at high system supply voltages with the sub-modulation technique of the present invention (graph A shows the desired output pressure and graph B shows the corresponding main and sub-modulation voltages). and FIG. 7 is a flow chart representing computer program instructions executed by the computer controller of FIG. 1a to accomplish the secondary modulation voltage control of the present invention. ,
16...Transmission, 82.88...Fluid pressure source. 32.34.36.38.40... Solenoid operated control valve, 70... Battery. ■b...System supply voltage. 42... Computer control device. (4 others) FIG, 3 FIG, 5
Claims (1)
８８）と制御チャンバ（Ｃ１−Ｃ５）との間の接続と非
接続の状態を交互に切り替えるために電気的に駆動され
るソレノイド作動制御バルブ（３２−４０）と、バッテ
リ（７０）を含み、車輌の動作状態に依存して変動する
システム供給電圧（Ｖｂ）を与える直流電圧源とを含む
、車輌トランスミッション（１６）における制御チャン
バ（Ｃ１−Ｃ５）に所望の流体圧力を形成する制御装置
において、 （イ）直流電圧源（７０）のシステム供給電圧（Ｖｂ）
が相対的に低い場合にソレノイド作動制御バルブに印加
することにより制御チャンバに所望の圧力を形成させる
ようなオン時間／オフ時間デューティ比をデューティサ
イクルを有する比較的低周波のＰＷＭバルブ駆動信号を
形成し、かつ（ロ）直流電圧源（７０）の実際のシステ
ム供給電圧が相対的に低い電圧より高くなった場合にＰ
ＷＭバルブ駆動信号のオン時間が減少するようにＰＷＭ
バルブ駆動信号のオン時間を直流電圧源の実際のシステ
ム供給電圧に従って副変調する制御手段（４２）と、こ
の副変調されたＰＷＭバルブ駆動信号に従ってソレノイ
ド作動制御バルブを直流電圧源で駆動するドライバ手段
（４２）と、を設けたことを特徴とする制御装置。 ２、請求項１記載の制御装置において、ドライバ手段（
４２）はオン／オフ制御信号をソレノイド作動制御バル
ブに印加することにより、ソレノイド作動制御バルブを
直流電圧源（７０）で駆動し、制御手段（４２）は直流
電圧源からの相対的に低いシステム供給電圧を想定して
、所望の流体圧力の関数としてソレノイド作動制御バル
ブに対する比較的低周波のＰＷＭデューティ比コマンド
を与える主変調ルックアップ手段と、直流電圧源からの
実際のシステム供給電圧の関数として比較的高周波のＰ
ＷＭデューティ比コマンドを与える副変調ルックアップ
手段と、主変調ルックアップ手段と副変調ルックアップ
手段からのＰＷＭデューティ比コマンドを組み合わせて
ドライバ手段に対するオン／オフ制御信号を形成するＰ
ＷＭ手段（４２）とを含み、これによりソレノイド作動
制御バルブが可変に駆動されて直流電圧源からのシステ
ム供給電圧にかかわらず制御チャンバ（Ｃ１−Ｃ５）に
所望の圧力を形成することを特徴とする制御装置。 ５、請求項２記載の制御装置において、ＰＷＭ手段（４
２）は主変調ルックアップ手段と副変調ルックアップ手
段からのＰＷＭデューティ比コマンドを論理和操作（１
７２）によって組み合わせることを特徴とする制御装置
。[Claims] 1. Fluid pressure source (82, 88);
a solenoid actuated control valve (32-40) electrically actuated for alternating connected and disconnected states between the control chamber (C1-C5) and the control chamber (C1-C5); and a battery (70); a DC voltage source providing a system supply voltage (Vb) that varies depending on the operating conditions of the vehicle; (a) System supply voltage (Vb) of DC voltage source (70)
Form a relatively low frequency PWM valve drive signal having a duty cycle with an on-time/off-time duty ratio such that application to the solenoid-actuated control valve causes the desired pressure to build up in the control chamber when the pressure is relatively low. and (b) when the actual system supply voltage of the DC voltage source (70) becomes higher than the relatively low voltage, P
PWM so that the ON time of the WM valve drive signal is reduced.
control means (42) for sub-modulating the on-time of the valve drive signal according to the actual system supply voltage of the DC voltage source; and driver means (42) for driving the solenoid actuated control valve with the DC voltage source in accordance with the sub-modulated PWM valve drive signal. (42) A control device characterized by comprising: 2. The control device according to claim 1, wherein the driver means (
42) drives the solenoid-operated control valve with a DC voltage source (70) by applying an on/off control signal to the solenoid-operated control valve, and the control means (42) operates a relatively low system voltage from the DC voltage source. a primary modulation lookup means for providing a relatively low frequency PWM duty ratio command to the solenoid actuated control valve as a function of the desired fluid pressure assuming the supply voltage and as a function of the actual system supply voltage from the DC voltage source; Relatively high frequency P
a secondary modulation lookup means for providing a WM duty ratio command, and P which combines the PWM duty ratio commands from the primary modulation lookup means and the secondary modulation lookup means to form an on/off control signal for the driver means
WM means (42) for variably actuating the solenoid-operated control valves to create a desired pressure in the control chambers (C1-C5) regardless of the system supply voltage from the DC voltage source. control device. 5. The control device according to claim 2, wherein the PWM means (4
2) is a logical sum operation (1) of the PWM duty ratio commands from the main modulation lookup means and the submodulation lookup means
72) A control device characterized by being combined with.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US345054 | 1989-04-28 | ||
| US07/345,054 US4898361A (en) | 1989-04-28 | 1989-04-28 | Submodulation of a pulse-width-modulated solenoid control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02300556A true JPH02300556A (en) | 1990-12-12 |
| JPH0563661B2 JPH0563661B2 (en) | 1993-09-13 |
Family
ID=23353284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2115033A Granted JPH02300556A (en) | 1989-04-28 | 1990-04-27 | Submodulation for pulse width modulation solenoid-operated control valve |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4898361A (en) |
| EP (1) | EP0395229B1 (en) |
| JP (1) | JPH02300556A (en) |
| BR (1) | BR9001997A (en) |
| CA (1) | CA2003432C (en) |
| DE (1) | DE69009848T2 (en) |
| ES (1) | ES2057383T3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5757605A (en) * | 1995-03-02 | 1998-05-26 | Honda Giken Kogyo Kabushiki Kaisha | Pulse-width modulation control system for multiple solenoids utilizing a single A/D converter in which the A/D conversion time is used to control the sequential operation of the solenoids |
| US5933313A (en) * | 1995-03-02 | 1999-08-03 | Honda Giken Kogyo Kabushiki Kaisha | Pulse-width modulation control system for electronic device |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5241251A (en) * | 1990-05-21 | 1993-08-31 | Asahi Kogaku Kogyo Kabushiki Kaisha | Drive signal generating device |
| US5281902A (en) * | 1992-08-05 | 1994-01-25 | Eaton Corporation | Voltage compensation of a pulse-width-modulated servomechanism |
| US5611370A (en) * | 1994-11-10 | 1997-03-18 | Saturn Electronics & Engineering, Inc. | Proportional variable force solenoid control valve and transmission fluid control device |
| US5640322A (en) * | 1994-12-15 | 1997-06-17 | General Motors Corporation | System for controlling the operation of a vehicular transmission |
| JP3869028B2 (en) * | 1995-04-28 | 2007-01-17 | 日産自動車株式会社 | Brake hydraulic pressure control device |
| FR2734394A1 (en) * | 1995-05-17 | 1996-11-22 | Caterpillar Inc | Control circuit for electromagnetic actuator |
| JP2854538B2 (en) * | 1995-05-19 | 1999-02-03 | アイシン・エィ・ダブリュ株式会社 | Control device for linear solenoid valve |
| US5722459A (en) * | 1995-05-31 | 1998-03-03 | Hyundai Motor Company | Pressure control valve of a hydraulic control system of an automatic transmission |
| DE19727358B4 (en) * | 1996-07-02 | 2008-02-07 | Conti Temic Microelectronic Gmbh | Pressure medium system and a method for their use |
| US6208498B1 (en) * | 1997-12-17 | 2001-03-27 | Jatco Transtechnology Ltd. | Driving method and driving apparatus of a solenoid and solenoid driving control apparatus |
| US6069783A (en) * | 1998-11-06 | 2000-05-30 | Hi-Stat Manufacturing Company, Inc. | Apparatus and method for controlling a solenoid valve |
| US6126138A (en) * | 1998-12-30 | 2000-10-03 | Hamilton Sundstrand Corporation | Pressure reducing valve and continuously variable transmission with control arrangement using same |
| JP3620638B2 (en) * | 1999-04-30 | 2005-02-16 | ジヤトコ株式会社 | Control device for automatic transmission |
| US6978978B2 (en) * | 2000-10-31 | 2005-12-27 | Nordson Corporation | PWM voltage clamp for driver circuit of an electric fluid dispensing gun and method |
| US7740225B1 (en) * | 2000-10-31 | 2010-06-22 | Nordson Corporation | Self adjusting solenoid driver and method |
| DE10130335C1 (en) * | 2001-06-26 | 2003-02-13 | Zf Lemfoerder Metallwaren Ag | Locking and unlocking mechanism with electromagnet |
| US7850572B2 (en) * | 2007-07-31 | 2010-12-14 | Delphi Technologies, Inc. | Hydraulic over/undershoot protection for transmission clutch control |
| US10240785B2 (en) * | 2010-01-28 | 2019-03-26 | Noritz Corporation | Driving method for solenoid valve, solenoid valve driving apparatus, and combustion apparatus including same |
| US20150167589A1 (en) * | 2013-12-13 | 2015-06-18 | Hyundai Motor Company | Method and apparatus for controlling high pressure shut-off valve |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4031782A (en) * | 1976-02-27 | 1977-06-28 | Borg-Warner Corporation | Method and apparatus for a transmission control system |
| FR2370216A1 (en) * | 1976-11-05 | 1978-06-02 | Renault | CONTROL DEVICE BY CURRENT PROGRAM OF SEVERAL SOLENOID VALVES WITH SIMULTANEOUS ASYNCHRONOUS OPERATION OR NOT |
| DE2828678A1 (en) * | 1978-06-30 | 1980-04-17 | Bosch Gmbh Robert | METHOD AND DEVICE FOR OPERATING AN ELECTROMAGNETIC CONSUMER, IN PARTICULAR AN INJECTION VALVE IN INTERNAL COMBUSTION ENGINES |
| JPS5768610A (en) * | 1980-10-15 | 1982-04-27 | Taku Yamada | Heat insulator-filled wiring box |
| DE3071909D1 (en) * | 1980-12-29 | 1987-04-02 | Caterpillar Inc | Pulse width modulated constant current servo driver |
| US4373697A (en) * | 1980-12-29 | 1983-02-15 | Caterpillar Tractor Co. | Pulse width modulated constant current servo driver |
| JPS5851233A (en) * | 1981-09-21 | 1983-03-25 | Hitachi Ltd | Fuel injection valve driving circuit |
| US4479161A (en) * | 1982-09-27 | 1984-10-23 | The Bendix Corporation | Switching type driver circuit for fuel injector |
| JPS59103091A (en) * | 1982-12-01 | 1984-06-14 | Nippon Denso Co Ltd | Control method of electrification current for solenoid valve |
| US4511945A (en) * | 1983-12-27 | 1985-04-16 | Ford Motor Company | Solenoid switching driver with fast current decay from initial peak current |
| US4536818A (en) * | 1984-03-02 | 1985-08-20 | Ford Motor Company | Solenoid driver with switching during current decay from initial peak current |
-
1989
- 1989-04-28 US US07/345,054 patent/US4898361A/en not_active Expired - Fee Related
- 1989-11-21 CA CA002003432A patent/CA2003432C/en not_active Expired - Fee Related
-
1990
- 1990-03-30 DE DE69009848T patent/DE69009848T2/en not_active Expired - Fee Related
- 1990-03-30 ES ES90303401T patent/ES2057383T3/en not_active Expired - Lifetime
- 1990-03-30 EP EP90303401A patent/EP0395229B1/en not_active Expired - Lifetime
- 1990-04-27 JP JP2115033A patent/JPH02300556A/en active Granted
- 1990-04-27 BR BR909001997A patent/BR9001997A/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5757605A (en) * | 1995-03-02 | 1998-05-26 | Honda Giken Kogyo Kabushiki Kaisha | Pulse-width modulation control system for multiple solenoids utilizing a single A/D converter in which the A/D conversion time is used to control the sequential operation of the solenoids |
| US5933313A (en) * | 1995-03-02 | 1999-08-03 | Honda Giken Kogyo Kabushiki Kaisha | Pulse-width modulation control system for electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| US4898361A (en) | 1990-02-06 |
| EP0395229A2 (en) | 1990-10-31 |
| CA2003432C (en) | 1993-10-12 |
| CA2003432A1 (en) | 1990-10-28 |
| JPH0563661B2 (en) | 1993-09-13 |
| DE69009848D1 (en) | 1994-07-21 |
| ES2057383T3 (en) | 1994-10-16 |
| DE69009848T2 (en) | 1994-09-22 |
| EP0395229A3 (en) | 1991-12-27 |
| BR9001997A (en) | 1991-08-13 |
| EP0395229B1 (en) | 1994-06-15 |
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